I have to say that the blue part feels more plastic than glass. It feels more heavy than plastic. It reminds me sorta like my old bowling ball. Same color. Maybe is an old broken bowling ball and rock formed around it.

Being a native of Rossford I used to find stuff like that around the old L.O.F Dump sight by where the Rossford Marina is now. We used to find it across the street where the old General Mills plant was and it was nothing but a big hole and was filled in with glass scraps from LOF

Wait. I'm a little hazy on glass dynamics. You're saying the dirt in the glass will start deforming the surface into crumpled roughness, hence "crizzle"? Glass should be too stiff for that to work. Shattering, I can believe. Crizzling, nope.

You're correct, the glass isn't deformed, it "rots", in a manner of speaking.

Extended exposure to moisture could cause the surface of poorly formulated glass to leech out some of the chemicals in the glass. If the glass is buried, these chemicals could possibly combine with minerals in the soil and crust up on the cullet.